diff --git a/LICENSE b/LICENSE
index 3d1729d..f650d4b 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2019 jdhao
+Copyright (c) 2018-2021 jdhao
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal